Good Evening J.O.
Although retired for 5 years, not flown the A-320 in ten years, not privy to the C.V.R. transcripts or Flight Data Acquisition Unit transcripts, not having the exact weather at the time of the incident, crew qualifications, crew duty day, aircraft related M.E.L. issues if any, field reports or NOTAMS for airport, fuel state as far as alternate is concerned, aircraft performance issues in spite of 23,000 hours flight experience and 42 years flying experience I will defer to the accident investigation experts to analyze the incident and write up their report. Anything else would be intellectually dishonest and morally bankrupt but then again there are others who would consider trial by internet as to be factual as well as being expedient as their cognitive skills would be how I would say this delicately lacking in nature.
Wait for the report to be published and if you can not, read the National Enquirer to find the answer that will be acceptable to your pedestrian thinking.